XcodesKit is the shared Swift package that powers XcodesOrg apps. It contains the core models, services, environment hooks, and filesystem/download workflows used by XcodesApp to discover, download, install, update, and manage Xcode releases and simulator runtimes.

• macOS 13 or newer
• Swift 6.0 or newer

Add XcodesKit as a Swift Package dependency:

.package(url: "https://github.com/XcodesOrg/XcodesKit", branch: "main")

Then depend on the library product from your target:

.product(name: "XcodesKit", package: "XcodesKit")

XcodesKit includes a DocC catalog at Sources/XcodesKit/Documentation.docc. Open the package in Xcode and choose Product > Build Documentation to browse the public API grouped by workflow.

The main entry points are:

• XcodeListService for loading Xcode release metadata from Apple or Xcode Releases.
• InstalledXcodeDiscoveryService for reading installed Xcode bundles.
• XcodeListComposer and XcodeListPresentationService for building UI-ready Xcode lists.
• XcodeArchiveService, XcodeArchiveInstallService, and XcodeUnarchiveService for archive download and install workflows.
• XcodeSelectionService for selecting an installed Xcode.
• RuntimeService and the runtime install services for simulator runtime discovery and installation.

Most services provide default initializers for real network, filesystem, and shell behavior, plus closure-based initializers for tests and host-app integration.

Build the package:

swift build

Run the test suite:

swift test

The CLI and app also have opt-in download smoke tests. With local copies of Xcode 27.3 beta in both formats, run:

python3 Tests/serve_archive_smoke_fixtures.py /path/to/Xcode_27.3_beta.aea /path/to/Xcode_27.3_beta.xip

Use the printed URL as XCODES_ARCHIVE_SMOKE_URL. Run the CLI's test_InstallDownloaded… tests with HOME and XCODES_ARCHIVE_SMOKE_HOME set to the same fresh mktemp -d /tmp/xcodes-cli-smoke.XXXXXXXX directory, and set XCODES_ARCHIVE_SMOKE_ARIA2 to the aria2c executable. Run the app's test_Install_Downloaded… tests with TEST_RUNNER_XCODES_ARCHIVE_SMOKE_URL when using xcodebuild. For a known damaged XIP fixture, set XCODES_ARCHIVE_SMOKE_EXPECT_DAMAGED_XIP=1 (prefix it with TEST_RUNNER_ for the app under xcodebuild) to test rejection instead of installation.